Musannaf Ibn Abi Shayba 3:1648

Ibn ‘Ulayyah narrated to us, from Ibn ‘Awn, from Anas ibn Sirin, and from ‘Abd al-Hamid ibn al-Mundhir ibn al-Jarud, from Anas ibn Malik, who said: Some of my paternal uncles prepared food for the Prophet, may Allah bless him and grant him peace. He said, "I would like for you to eat in my house and pray in it." He said: So he came to him, and in the house was a mat from those mats. He ordered a side of it to be swept and sprinkled [with water], so he prayed, and we prayed with him.